Blue Line Right Brake Master Cylinder - No Mirror Mount
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Restore responsive, dependable stopping power to your ATV, dirt bike, or motorcycle with the premium Blue Line Right-Hand Brake Master Cylinder Assembly. Engineered as a durable factory replacement, this complete master cylinder is built to endure harsh riding conditions, providing immediate hydraulic pressure to your front brake system.
Key Features
- Bottom-Mount Brake Line Interface: Designed for clean brake line routing on compact handlebar setups, reducing the risk of snagging trail debris or bodywork.
- All-In-One Control Layout: Comes fully equipped with an integrated right-hand brake lever, a non-wired brake safety switch, and a matching banjo bolt for immediate setup.
- Universal Handlebar Mounting: Features a standard 22mm (7/8 inch) clamp diameter to fit securely onto almost any common small-to-mid displacement handlebar.
- No Mirror Mount Thread: This unit does not include an integrated mirror mounting thread — ideal for ATVs, dirt bikes, and motorcycles with body-mounted or stem-mounted mirrors. If your application requires a handlebar mirror, see our Right Master Cylinder with Mirror Mount instead.
Vehicle & Application Fitment
This right-side master cylinder fits any vehicle with a standard 22mm handlebar and a front hydraulic disc brake setup. Common applications include:
| Vehicle Type | Common Applications |
|---|---|
| Youth & Sport ATVs | 70cc, 90cc, 110cc, 125cc entry-level and recreational four-wheelers with front hydraulic disc brakes. |
| Dirt Bikes / Pit Bikes | 50cc–125cc pit bikes and off-road dirt bikes with 22mm handlebars and hydraulic front brakes. |
| On-Road Motorcycles | Small-displacement motorcycles and mopeds with body-mounted or stem-mounted mirrors (no handlebar mirror thread required). |
| GY6 Scooters & Go-Karts | Chinese GY6-powered scooters, mini bikes, and go-karts utilizing a 22mm handlebar hydraulic brake setup. |
| Custom / Recreational Builds | Mini choppers, pocket bikes, electric bikes, and custom builds using standard 7/8" handlebar clamps. |
Technical Specifications
- Handlebar Clamp Diameter: 22mm (7/8 Inch)
- Brake Line Port: Bottom-Mount Orientation
- Mirror Mount Thread: None
- Manufacturer Part Number (MPN): UPJ 4870
- Mounting Position: Right-Hand Handlebar
- SKU: 100-249
Mechanic's Installation Tip: After bolting the master cylinder down, fill the fluid reservoir and fully bleed your lines to clear out any trapped air bubbles that cause a spongy lever feel. Always use a lint-free cloth to shield plastic body fairings, as brake fluid will instantly blister and ruin plastic coatings.
SKU: 100-249 | Vendor: Blue Line | Category: Brake Master Cylinders in Motor Vehicle Braking
This product is not intended for use on public roads or land.
Shipping information
Orders are prepared as quickly as possible. Delivery times and shipping costs are calculated at checkout based on the destination and items ordered.
Returns & warranty
Please verify fitment and part number before ordering. Contact Thrifty Scooters promptly if an item arrives damaged or incorrect.